MdeModulePkg: Remove superfluous return statements

If the code eventually returns "Status" anyway, it does not make
sense to explicitly return "Status" in case of an error, too.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>

MdeModulePkg/Bus/Sd/EmmcBlockIoPei/EmmcHci.c

@@ -2520,9 +2520,6 @@ EmmcPeimSwitchToHighSpeed (
 
   HsTiming = 1;
   Status = EmmcPeimSwitchClockFreq (Slot, Rca, HsTiming, ClockFreq);
-  if (EFI_ERROR (Status)) {
-    return Status;
-  }
 
   return Status;
 }